OS Ticket Customization

I have a list of OS ticket customizations which I need completed. I will list a few of the more important ones here to ensure that all applicants feel comfortable in applying. Please feel free to contact if there are additional questions. Main Tasks: - Must integrate OS ticket with AD authentication for end users - modify OS ticket front page using the AD pass-through authentication to allow for a display of current tickets (details and image of vision will be provided upon hiring) - Addition of multi-tired categories for ticket classification. this must allow for ease of adding new categories as well as sub-categories. classification will only be visible and complete by support staff not by end-users submitting tickets - modification of the reports mod to allow for reporting from the newly created categories and sub categories - adding ticket linkages/ parent child type relationship (concept to be explained upon hiring) Preferences: - Would prefer someone who is familiar with OSTicket's structure to reduce development time and cost - expert PHP & MySQL knowledge is a must - additional ticketing system development experience is a nice to have but is not a must - I'd prefer a fixed price per modification listed above